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package com.zjdt.epserver.servlet.web.cargo;

import com.zjdt.epserver.db.service4mysql.CargoServiceImpl;
import com.zjdt.epserver.servlet.util.*;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FileExistsException;
import org.dusin.web.util.JsonUtil;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;


/**
 *
 * @author dusin
 */
@WebServlet(name = "Upload4Photo", urlPatterns = {"/servlet/web/cargo/Upload4Photo"})
public class Upload4Photo extends HttpServlet {
    private CargoServiceImpl instance;

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/json;charset=UTF-8");
        HttpSession session = request.getSession();
        ApplicationContext context = WebApplicationContextUtils.getWebApplicationContext(getServletContext());
        instance = (CargoServiceImpl) context.getBean("cargoService");
        if (!ServletFileUpload.isMultipartContent(request)) {
            throw new IllegalArgumentException("Request is not multipart, please 'multipart/form-data' enctype for your form.");
        }

        ServletContext servletConfig = request.getServletContext();
        String dataDirectoryStr = servletConfig.getInitParameter("DataDirectory");
        if (dataDirectoryStr == null) {
            dataDirectoryStr = "e:/test";
        }
        
        //File path = new File("../webapps/EPServer/driver/");
        dataDirectoryStr = this.getServletContext().getInitParameter("BussinessPhotoDir");
        DiskFileItemFactory factory = new DiskFileItemFactory();
        // Configure a repository (to ensure a secure temp location is used)
        ServletContext servletContext = this.getServletConfig().getServletContext();
        File repository = (File) servletContext.getAttribute("javax.servlet.context.tempdir");
        System.out.println("repository:" + repository.getAbsolutePath());
        factory.setRepository(repository);
        ServletFileUpload uploadHandler = new ServletFileUpload(factory);
        uploadHandler.setHeaderEncoding("utf-8");  //可以解决中文文件名乱码问题
        response.setCharacterEncoding("utf-8");
        PrintWriter out = response.getWriter();
        String jsonText=null; 
        try {
            FileItem frontFileItem = null;
            FileItem sideFileItem=null;
            FileItem licenseFileItem = null;
            FileItem paperFileItem = null;
            Integer id=null;
            String recordNo=null;
            List<FileItem> items = uploadHandler.parseRequest(request);
            for (FileItem item : items) {
                if (!item.isFormField()) {
                    String fieldName = item.getFieldName();
                    if("file1".equals(fieldName)){
                        frontFileItem = item;
                    }
                    if("file2".equals(fieldName)){
                        sideFileItem = item;
                    }
                    if("file3".equals(fieldName)){
                        licenseFileItem = item;
                    }
                    if("file4".equals(fieldName)){
                        paperFileItem = item;
                    }                   
                } else {
                    if("ID".equals(item.getFieldName())){
                        id = Integer.parseInt(item.getString());
                    }
                    if("recordNo".equals(item.getFieldName())){
                        recordNo = item.getString();
                    }
                    System.out.println("field:" + item.getFieldName() + "---" + item.getString());
                }
            }
            
            //保存图片
            if(frontFileItem!=null&&frontFileItem.getSize()!=0){
                String filename = "头"+recordNo+".jpg";
                File file = new File(dataDirectoryStr + "/", filename);
                if(file.exists()){
                    file.delete();
                }
                frontFileItem.write(file);
                instance.updatePhotoNameByRecordNo(recordNo, "frontPhoto", filename);
            }
            if(sideFileItem!=null&&sideFileItem.getSize()!=0){
                String filename = "货"+recordNo+".jpg";
                File file = new File(dataDirectoryStr + "/", filename);
                if(file.exists()){
                    file.delete();
                }
                sideFileItem.write(file);
                instance.updatePhotoNameByRecordNo(recordNo, "sidePhoto", filename);
            }
            if(licenseFileItem!=null&&licenseFileItem.getSize()!=0){
                String filename = "证"+recordNo+".jpg";
                File file = new File(dataDirectoryStr + "/", filename);
                if(file.exists()){
                    file.delete();
                }
                licenseFileItem.write(file);
                instance.updatePhotoNameByRecordNo(recordNo, "licensePhoto", filename);
            }
            if(paperFileItem!=null&&paperFileItem.getSize()!=0){
                String filename = "单"+recordNo+".jpg";
                File file = new File(dataDirectoryStr + "/", filename);
                if(file.exists()){
                    file.delete();
                }
                frontFileItem.write(file);
                instance.updatePhotoNameByRecordNo(recordNo, "paperPhoto", filename);
            }
            
            jsonText = JsonUtil.createSuccessJsonResponse("上传成功");
        } catch (FileExistsException e) {
            jsonText = JsonUtil.createFailureJsonResponse("文件已存在");
            e.printStackTrace();
        } catch (Throwable t) {
            jsonText = JsonUtil.createFailureJsonResponse("操作失败");
            t.printStackTrace();
        } finally {
            out.println(jsonText);
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
